Ore-washer



A. M. GOW.

ORE WASHER.

APPLICATION FILED JULY I6, Iszo.

UNITED STATES ALEXANDER IM. GOW, 0F DULUTH, MINNESOTA.

ORE-WASHER.

Specification of Letters Patent.

Patented Oct. 4, 1921.

Application led July 16, 1920. Serial No. 396,781.

To all who/m 'it may concern Be it known that I, ALEXANDER M. Gow, a citizen of thev United States, residing at Duluth, in the county of St. Louis and Sata-te of Minnesota, have invented certain 'new and useful Improvements in Ore-Washers, of which the following is a specification.

This invention relates to ore washers, and particularly to magneticv ore washers.

One object of this invention is to efficiently separate magnetic from non-magnetic particles, or separate matter of different degrees of permeability in a simple and practical manner.

Another object is to provide a magnetic ore washer simple and durable in construction, in which the parts are arranged to cooperate in amanner to meet all of the requirements for successfully concentrating magnetic ores.

These and other objects are accomplished by means of the arrangement disclosed on the accompanying sheet of drawings, in which- Figure 1 is a vertical longitudinal sectional view of my magnetic ore washer; and,

Fig. 2 is a transverse sectional view of the same. A

The various novel features of my invention will be apparent from the following description and drawings and will be particularly pointed out in the appended claims.

Referring tc the figures of the drawings, it will b'e noted that my magnetic ore washer preferably includes a vertically arranged tank or shell 10, to the outer side of which is secured a plurality of magnets 11 for the purpose of drawing to the inner wall of the tank magnetic particles which are included in ore supplied to the tank through any suitable supply means, such as a chute 12. Secured to the lower end of the main tank 10 is a settling tank 13 provided with the usual spigot or discharge gate 14, said settling tank preferably being supplied with clean water through branch pipes 15 connecting with a supply pipe 16. Rotatably mounted within the shell or tank 10 is a hollow shaft u 17 mounted in any suitable bearing 18 at its lower end and rotated by any suitable mechanism, which may include a gear 19 mounted upon one end of the hollow shaft 17. Secured to the shaft are a .plurality of paddles which radiate from the shaft and terminate in relatively straight'edges, which preferably are in parallelism withthe inner pipe 22.

surface of the tank, and when moved by a rotary action of the shaft just clear the inner surface of said tank for the purpose of scraping from the inner surface ofthe tank any magnetic material which has been drawn thereto by the action of the magnets 11. The magnetic ore particles are relatively heavy, as compared with the sand or other gangue within the tank, and accordingly when scraped or otherwise removed from the inner wall of the tank 11 by the paddles 20 .tend to settle toward the bottom of the tank and pass into the settling chamber 13, this action being augmented bythe paddles 2O having an angle which tends to thrust the magnetic ore particles downwardly. The sand or other non-magnetic material fromwhich the magnetic material is separated being lighter in weight is caused to move upwardly by rising currents of water, which not4 only issue through the pipes 15, but also through openings'21 in the hollow shaft 17, it being understood that the main supply of water is forced through said hollow s aft from any suitable water supply- The non-magnetic material or gangue caused to rise by the upward currents' of water, is discharged from the upper end of the tank through any` suitable overflow or spout 23. Preferably the ore supply is located at a point intermediate the concentrate settling tank 13 and the gangue discharge spout 23. By means of this arrangement the ore washer is adapted to separate magnetic from non-magnetic particles `of different degrees of permeability in a simple and efficient manner, and also in a manner to meet commercial requirements. y It is my intention to cover all modifications of the invention falling within the spirit and scope of the following claims.

I claim:

1. In an ore washer for separating magnetic from non-magnetic particles or articles of different degrees of permeabi ity, Y

2. In an ore washer for separating magnetic from non-magnetic particles or particles of different degrees of permeability,

A. side of the tank, and a hollow shaft within said tank carrying paddles for removing the magnetic particles from the inner wall of the tank and causing same to descend, said hollow shaft beingprovided with apertures whereby water supplied to said hollow shaft passes through said apertures into the tankfor causingy the gangue to rise and to be discharged from said tank.

3. In an ore washer for separating magnetic from non-magnetic .particles or particles of different degrees of permeability, the combination of a vertically arranged tank into which magnetic ore to be washed is deposited, means for drawing magnetic particles of the ore to the inner wall of the tank, a hollow shaft mounted in said tank carrying paddles for removing the magnetic particles from .the inner walls of the tank and causing same to descend, and a settling tank at the lower end of said main tank into which the magnetic particles settle, said shaft having openings through which Water supplied to the shaft may be discharged into the tank to create rising currents of Water for discharging the gangue.

4. In an ore washer for separating magnetic from non-magnetic particles or particles of different degrees of permeability, the combination of a vertical arranged tank into which magnetic ore to be washed is deposited, means for drawing magnetic particles of said ore to the inner wall of the tank, a hollow shaft mounted in said tank carrying paddles for removing the magnetic particles from the inner walls of the tank and causing same to descend, a settling tank at the lower end of said main tank into which the magnetic particles settle, said shaft having openings through which water supplied to the shaft may be discharged into the tank to create rising currents of water for discharging the gangue, means for withdrawing material deposited in said settling tank, and means for supplying additional water to `said settling tank.

Signed at Duluth, Minnesota, this 7 th day of July, 1920.

ALEXANDER M. GOW. 

